Page 136 - CITS - Fitter - Trade Theory

FITTER - CITS

Different types of press tool and operations

Objectives : At the end of this lesson you shall be able to
• state the press tool and its application
• state the components of press tools
• state the different types of press tools and operations
• state the different types of operation performed using press tool

• Introduction To Press Tool:
A press tool, also known as a press die or stamping die, is a specialized tool used in manufacturing processes to
shape, cut, or form materials under pressure. Press tools are commonly used in metalworking operations but can
also be employed with other materials such as plastics and composites. They are essential in industries ranging
from automotive and aerospace to electronics and appliance manufacturing.

• Component of press tool:
1 Punch: The punch is a component of the press tool that directly contacts and applies force to the workpiece.
It is often made of hardened steel and is designed to impart the desired shape or feature onto the material
being worked on.
2 Die: The die serves as a counterpart to the punch and provides support to the workpiece during the forming
process. It is typically a hardened steel block with a cavity that matches the shape of the punch. The workpiece
is placed between the punch and die, and as the punch descends, it deforms the material into the shape of
the die.
3 Stripper: In some press tools, especially those used for complex shapes or thin materials, a stripper is employed
to help remove the formed part from the punch after the operation is complete. The stripper holds the material
down onto the die as the punch is withdrawn, preventing it from sticking to the punch.
4 Guide Pins and Bushings: These components ensure proper alignment between the punch and die during
operation, helping to maintain accuracy and precision in the formed parts.
5 Backing Plate or Retainer Plate: The backing plate provides support to the die assembly and helps distribute
the forces applied during the stamping process. It is often bolted to the press bed or ram to ensure stability.

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CITS : CG & M - Fitter - Lesson 21 CITS : CG & M - Fitter - Lesson 21